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Across: A: this prime number equals the sum of B down and the reverse of A down.
C: this prime number equals the digit sum of F down.
D: D across + 1 is a cubic number.
E: a palindrome.
G: G across is both a cubic number and a square number.
I: this prime number is a palindrome and has the same digit sum as F down.
K: G across multiplied with the digit product of A down.
L: this prime number equals the sum of the digit sums of A across, F down, E across, K across, and G across.

Down: A: a square number.
B: the reverse of a prime number.
C: the reverse of this square number is prime.
D: the digit product of E across.
F: five times A across.
H: a prime number.
I: G across plus the digit sum of G across.
J: a palindrome.

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